Machine learning is the ability of a machine to improve its performance based on previous results. Machine learning methods enable computers to learn without being explicitly programmed and have ...

离线强化学习（Offline RL）的一大难点是：训练数据固定、质量参差不齐。近两年，Decision Transformer（DT）等基于 Transformer 的方法因为把决策建模成条件序列生成而受到关注，但它们往往把「整条轨迹」作为学习单位：如果一条轨迹的最终回报不高，轨迹中间即便 ...